We all know the peaceful earth where there is no monsters. We think those monsters are just from our childhood storybooks we read. We are afraid those monsters are under our bed.

Who would have thought, these monsters do exist.

In a small corner on earth, monsters who disbehave and appears in human's eyes and murders them will be sent to that corner of earth. And be killed. 

Most of the population is made of vampires and ghosts.

Believe it or not, the ghosts are visible. But not those long haired ghosts.

Ghosts who don't float. Ghosts who just acts like humans.

But it's easy to tell if it's a ghost or not.

Every ghost is born with 1 human eye and 1 eye which is of a different colour. People would mistake them as if they're wearing contacts. Therefore, it's easy for the ghosts to possess a human.

You may think the vampires on earth will be easy to tell.

But it's not.

There are 2 types of vampires.

The HB vampires. Which stands for Human Blood.

And the AB vampires. Which stands for Animal Blood.

The HB vampires are each given a necklace which glows of different colours and they are given things that are red to drink. If they're good, they will be awarded with animal blood. But everytime they get hungry for human blood, they're eyes flashes red. Sadly, everytime they are given red to drink and not blood, they have a 40% chance of collapsing.

The AB vampires are given the same treatment.

And Kang Ara, Kim Shi Jin and Choi Mina, 3 best friends, wants to find more about these vampires. One more thing, vampires and ghosts should not fall in love with humans. Or else not even god will know what will happen to them. 

But what will happen when the 3 fall in love?